JP6312297B2 - Measuring method and measuring device for distance - Google Patents

Description

  The present invention relates to a method and an apparatus for measuring a distance between a side edge of a platform and a railway vehicle.

It is necessary to ensure a certain distance between the railway vehicle and the station platform so that the ground structure such as the platform and the vehicle do not come into contact with each other. Therefore, for example, in order to grasp the distance between the platform and the vehicle, before starting the new line or before starting the mutual direct operation, the actual vehicle to be used as the test vehicle, the new line or the mutual direct operation destination We are running a test at. As a method for confirming the separation amount during the test run, conventionally, as shown in FIG. 9, a foamed polystyrene 110 having a predetermined thickness is attached to the vehicle side surface 32 of the railway vehicle 30, and the railway vehicle 30 is moved to the side of the platform. It was confirmed whether or not the polystyrene foam 110 was in contact with the platform when it entered. That is, the foamed polystyrene 110 is attached to a predetermined height of the vehicle side surface 32, and a CCD camera 112 that photographs the foamed polystyrene 110 is installed on the foamed polystyrene 110 on the vehicle side surface 32 (upper side in the figure). Then, the foamed polystyrene 110 is photographed and recorded by the CCD camera 112 while the railway vehicle 30 is running, and the presence or absence of damage to the foamed polystyrene 110, that is, the presence or absence of contact with the platform is confirmed by the recorded image or the visual observation after running. doing.

In consideration of the case where the platform is installed in a curved shape, the polystyrene foam 110 and the CCD camera 112 are provided at three locations on the side surface 32 of the vehicle, in the vicinity of the center in the longitudinal direction of the vehicle (left and right in the figure) and near both ends. is set up. That is, as shown in FIG. 10A, when the platform 34 is installed on the curved outer track side, the gap 36 between the vehicle side surface 32 and the platform 34 in the vicinity of both ends in the vehicle longitudinal direction becomes narrow. On the other hand, the gap 36 in the vicinity of the center in the longitudinal direction of the vehicle becomes wider (see reference A2 in the figure). On the other hand, as shown in FIG. 10B, when the platform 34 is installed on the in-curve track side, the gap 36 in the vicinity of both ends in the longitudinal direction of the vehicle is widened (see symbol A3 in the figure). The gap 36 in the vicinity of the center in the longitudinal direction of the vehicle is narrowed (see symbol A4 in the figure). Even in these cases, the polystyrene foam 110 and the CCD camera 112 are installed at three locations near the center and near both ends in the longitudinal direction of the vehicle so that the presence of the polystyrene foam 110 in contact with the platform 34 can be confirmed. is there.
Further, as an invention related to the measurement of the separation amount, for example, a method of measuring the separation amount using a laser displacement meter (see Patent Document 1) or a method of measuring the separation amount using a vehicle dedicated to measurement (Patent Document) 2 and 3).

JP 2002-71320 A JP 2007-64890 A JP-A-5-27047

  By the way, in the method shown in FIG. 9, since it is only confirmed whether or not the foamed polystyrene 110 is in contact with the platform by visual observation or a photographed image, it is determined whether or not a separation amount corresponding to the thickness of the foamed polystyrene 110 is secured. However, the amount of separation between the platform and the vehicle 30 cannot be quantitatively grasped. Furthermore, since the apparatus described in Patent Document 1 has a complicated apparatus configuration, it takes time to install the test vehicle, and the inventions described in Patent Documents 2 and 3 require that a vehicle dedicated to measurement be prepared. As a result, the cost will increase.

  The present invention has been made in view of the above problems, and an object of the present invention is to easily grasp the quantitative distance between the platform and the railway vehicle without using a complicated device.

(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

(1) A method for measuring the distance between the side edge of the platform and the railway vehicle, and includes a gap between the side edge of the platform and the railway vehicle by photographing means installed downward on a side surface of the railway vehicle. Shooting the measurement range, based on the relationship between the preset shooting distance and the conversion ratio of the shot video distance, calibrate the size of the gap in the shot video and calculate the distance Law.

  The distance measurement method described in this section is such that a photographing means such as a CCD camera is installed downward on the side surface of the railway vehicle and includes a gap between the side edge of the platform and the railway vehicle, for example, from the platform end. The range up to a part of the side of the vehicle is photographed as the measurement range. Here, in shooting with a CCD camera or the like, the shooting range tends to widen as the shooting distance becomes longer. Therefore, even if the images are shot with the same CCD camera, the actual size in the video is different if the shooting distance is different. It will be different. Therefore, when the actual distance in the video is grasped from the video, a conversion ratio corresponding to the shooting distance is required for converting the size of the video into the actual size. For this reason, the distance measuring method described in this section presets the relationship between the vertical shooting distance from the shooting means and the conversion ratio of the shot video distance. Based on this relationship, the size of the gap between the side edge of the platform and the railway vehicle in the captured video is calibrated to the actual size, and the distance is calculated. Thereby, while grasping | ascertaining quantitatively the separation amount of a platform and a rail vehicle, it is easy to grasp | ascertain without using a complicated apparatus.

(2) In the above item (1), while the railway vehicle is traveling, the measurement range is photographed and recorded in association with the photographing time, and the upper surface position of the platform is detected and recorded. based on the relationship between the conversion ratio of the length of the taking image, and the captured image, said from the captured image and the shooting distance to be identified from the upper surface position recorded at the same time, the separation quantity measuring how to calculate the amount of spacing .
The method for measuring the separation amount described in this section is to take a measurement range including a gap between the side edge of the platform and the railway vehicle in a state in which the railway vehicle is running, and simultaneously correlate it with the photographing time. , Record the captured video on a video recorder or the like. In parallel with this, the upper surface position of the platform is detected, and the upper surface position is recorded in a data recorder or the like in association with the detected time. The upper surface position of the platform is detected using appropriate means that can be detected even while the railway vehicle is traveling.

  By detecting the upper surface position of the platform as described above, the vertical distance from the imaging means to the upper surface position of the platform is determined from the upper surface position and the installation position of the imaging means installed on the side surface of the railway vehicle. And, since the image taken from the side of the railway vehicle running on the side of the platform captures at least the upper surface position of the platform end, the above vertical distance from the imaging means to the upper surface position of the platform is This is a substantial shooting distance from the shooting means. Utilizing this, the method for measuring the separation amount described in this section uses the upper surface position of the platform recorded at the same time as the captured image to calculate the separation amount from the recorded captured image. Specify the shooting distance. Then, based on the relationship between the preset shooting distance and the conversion ratio of the shot video distance, the distance between the platform and the railway vehicle is calculated from the shot video and the specified shooting distance of the shot video. In this way, the distance is efficiently calculated using the upper surface position of the platform while the railway vehicle is running.

(3) In the above SL (2) term, as the relationship between the conversion ratio of the length of the photographing distance and shooting video, set a plurality of photographing distance, and the conversion ratio of the distance corresponding to each of the shooting distance of the plurality of measured how the amount of spacing.
The method for measuring the separation amount described in this section includes a plurality of shooting distances and a distance conversion ratio corresponding to each of the plurality of shooting distances as a relationship between a shooting distance and a conversion ratio of a shooting video distance. It is set in advance. That is, a plurality of predetermined distances are set in advance as shooting distances from the shooting means, and further, for example, actual shooting is performed using the set predetermined distances as shooting distances, and distances corresponding to each of the plurality of predetermined distances are set. Set the conversion ratio. Then, when calculating the distance from the captured video, the shooting distance at which the video was shot is specified from a plurality of predetermined distances, and using the conversion ratio of the distance corresponding to the specified predetermined shooting distance, Calculate the distance. In this way, by setting a plurality of shooting distances in advance, the distance is calculated quickly and efficiently.

(4) In the above item (3), the vertical distance from the photographing means is a non-contact displacement at a plurality of positions in the vehicle height direction of the end face of the railway vehicle corresponding to the plurality of photographing distances. The non-contact displacement meter installed at the top in the vehicle height direction among the non-contact displacement meters in which a rail is installed and the platform is detected while the railway vehicle is running on the side of the platform separation quantity measuring method of installation height, and the upper surface position (claim 1).

  The method for measuring the separation amount described in this section uses a plurality of non-contact displacement meters installed in a railway vehicle as means for detecting the upper surface position of the platform. Specifically, when installing a plurality of non-contact displacement meters in a railway vehicle, the vertical from the imaging means also installed in the railway vehicle to a plurality of positions in the vehicle height direction where the non-contact displacement meters are installed The distance is made to correspond to a plurality of predetermined distances set in advance as shooting distances. The non-contact displacement meter is installed horizontally from the vehicle side to the platform side so that the presence or absence of an object at the installation height can be detected. As a result, the plurality of non-contact displacement meters detect the platform only when the platform is at the same height as the installation height of the railcar while traveling on the side of the platform. In addition, when a platform is detected by a plurality of non-contact displacement gauges, the non-contact displacement gauge installed at the top in the vehicle height direction among the non-contact displacement gauges detecting the platform is installed. It is determined that the height is substantially equal to the upper surface position of the platform, and the separation amount measuring method described in this section uses the installation height of the uppermost non-contact displacement meter as the upper surface position. is there. In this way, the position of the upper surface of the platform is easily detected using an apparatus having a simple configuration.

(5) In the above SL (4) section the conversion ratio of the distance, to the size of the imaging range in the photographing image, the separation quantity measuring method stipulated as the actual size ratio of the shooting range (claim 2 ).
The distance measurement method described in this section uses the distance conversion ratio for converting the video size to the actual size, and the actual size of the shooting range relative to the size of the shooting range in the shot video. It is determined as a ratio.

  First, a case where a photographed image is displayed on a monitor and an operator performs measurement work will be described. For example, when setting the distance conversion ratio at a predetermined shooting distance prior to the measurement of the separation amount, the shooting means is installed in the vertically downward direction, and the distance from the shooting means is set to a position where the predetermined shooting distance is set. Place a horizontal scale horizontally. In this state, the photographing means performs photographing within a photographing range including a long length, and the photographed video is displayed on a monitor or the like. And by reading the scale of the long range displayed on the monitor screen, the actual size of the arbitrary range is grasped, and further, measuring with another long length on the monitor screen, etc. Thus, the size of the arbitrary range on the monitor is grasped. Using the two values grasped at this time, the actual size of the shooting range with respect to the size of the shooting range in the shot image (the long measured value on the monitor) at a predetermined shooting distance ( The ratio of the long scale reading in the monitor) is determined. If the distance conversion ratio is determined in this way, the actual size of the image displayed on the monitor is obtained by multiplying the size of the image displayed on the monitor by the distance conversion ratio. Is calculated.

Next, a case where image processing is performed by a computer without displaying video on a monitor will be described. In this case, for example, prior to the measurement of the separation amount, the actual length of one side of the rectangular shooting range of the video shot at a predetermined shooting distance is grasped, and further, the video data constituting the one side is obtained. Know the number of dots. Then, using these two grasped values, the actual size of the shooting range (video) with respect to the size of the shooting range in the shot video (number of dots constituting one side of the video data) at a predetermined shooting distance. Determine the ratio of the actual size of one side of the data). If the distance conversion ratio is determined in this way, the actual size of the arbitrary range of the video data is calculated by multiplying the number of dots constituting the arbitrary range of the video data by the distance conversion ratio. The
Therefore, the distance measurement method described in this section configures the size of the gap between the video platform displayed on the monitor and the railway vehicle and the gap of the video data when measuring the distance. The distance is efficiently calculated from the number of dots using a conversion ratio of a predetermined distance.

(6) In the above (4) and (5), a method for measuring a separation amount, wherein the photographing means is installed in the vicinity of the center and the end in the longitudinal direction of the vehicle (claim 3 ).
The separation amount measuring method described in this section is provided on a platform installed in a curved shape by installing photographing means installed on the side surface of the railway vehicle in the vicinity of the center and the end in the longitudinal direction of the vehicle. Corresponding. That is, on the side of the platform installed on the curved outer track side, the gap between the vehicle side surface and the platform is the widest in the vicinity of the center in the longitudinal direction of the vehicle and gradually narrows from the vicinity of the center to the vicinity of the end. On the other hand, on the side of the platform installed on the in-curve track side, the gap between the vehicle side surface and the platform is the narrowest in the vicinity of the center in the longitudinal direction of the vehicle and gradually increases from the vicinity of the center to the vicinity of the end. In view of this, the method for measuring the separation amount described in this section is to install the photographing means in the vicinity of the center and the vicinity of the end in the longitudinal direction of the vehicle so that the separation in both the vicinity of the center and the vicinity of the end where the separation amounts are different. Since the amount is calculated, the separation amount under more severe conditions is grasped from the separation amounts different in the longitudinal direction of the vehicle.

(7) In the above items ( 4 ) to (6), the captured image is displayed on a monitor, the size of the gap between the side edge of the platform and the railway vehicle on the monitor is measured, and the displayed image is displayed. read the top position recorded in the video at the same time, identifies the conversion ratio of the distance corresponding to the photographing distance determined from said surface position, from the size of the gap on the monitor, the conversion ratio of the specified distance, A method for measuring the separation amount for calculating the separation amount (claim 4 ).

  The method for measuring the separation amount described in this section is to display the captured image on a monitor and apply a long length on the monitor screen, etc. Measure the size. Subsequently, the upper surface position of the platform recorded at the same time as the captured image displayed on the monitor is read from a data recorder or the like, and the image displayed on the monitor from the read upper surface position as described in the above item (2). Specify the shooting distance. Further, based on the relationship between the preset shooting distance and the conversion ratio of the distance of the shot video, for example, the shooting distance of the video displayed on the monitor from the conversion ratio of the distance set for each of the plurality of shooting distances. The conversion ratio of the distance corresponding to is specified. Then, by applying the conversion ratio of the specified distance to the measured gap size on the monitor, the gap size on the monitor is converted to the actual size and the separation amount is calculated. Is. Thereby, the distance is easily measured without performing complicated processing such as image processing by a computer.

(8) A device for measuring the distance between the side edge of the platform and the railway vehicle, the apparatus being installed downward on a side surface of the railway vehicle, and having a measurement range including a gap between the side edge of the platform and the railway vehicle. Imaging means for imaging, detection means for detecting the upper surface position of the platform, video recording means for recording the video imaged by the imaging means, and data recording means for recording the upper surface position detected by the detection means separation quantity of measurement equipment, including door.

  The separation amount measuring device described in this section includes a photographing unit, a detecting unit, a video recording unit, and a data recording unit. The photographing means is installed downward on the side surface of the railway vehicle, and photographs a measurement range including a gap between the side edge of the platform and the railway vehicle. For example, a CCD camera or the like is used. The video recording means records video taken by the photographing means, and for example, a video recorder or the like is used. Furthermore, the detecting means detects the position of the upper surface of the platform, and the data recording means is for recording data detected by the detecting means. The separation amount measuring device described in this section is an appropriate environment for quantitatively grasping the separation amount, such as processing work by a computer or measurement work by an operator, by efficiently using these components. Is to provide. Furthermore, since the apparatus configuration is simple, it can be easily installed in the test vehicle.

(9) In the above item (8), based on a relationship between a preset shooting distance and a conversion ratio of a shot video distance, the shot video recorded in the video recording unit and the data recording unit include the shooting and a photographing distance determined from the upper surface position recorded in the video at the same time, the separation quantity measuring equipment comprising processing means for calculating the amount of spacing.
The separation amount measuring device described in this section includes processing means that uses various computers and the like, and uses this processing means to calculate the separation amount as described in the above section (2). Thus, the same effect as the above item (2) can be obtained.

(10) In the above item (9), the processing means, as a relationship between the shooting distance and the conversion ratio of the distance of the shot video, converts a plurality of shooting distances and distance conversion ratios corresponding to each of the plurality of shooting distances. separation quantity measuring equipment which bets are set.
(11) In the above item (10), the detection means is installed at a plurality of positions in the vehicle height direction on the railcar's wife surface , wherein vertical distances from the imaging means correspond to the plurality of imaging distances. A plurality of non-contact displacement meters, wherein the processing means detects the platform while the railway vehicle is running on the side of the platform, and the vehicle height direction of the non-contact displacement meters is detected. An apparatus for measuring a separation amount, wherein an installation height of the non-contact displacement meter installed at the uppermost part is set as the upper surface position (Claim 5 ).

(12) In the above SL (11) section, the processing means, as the conversion ratio of the distance, to the size of the imaging range in the photographing image, the separation amount of actual size ratio of the shooting range is set The measuring device (Claim 6 ).
(13) (11) (12) section, wherein the imaging means, the measurement of the amount of spacing that is installed in each of the central portion and end portion of the vehicle longitudinal device (claim 7).

(14) In the above paragraphs ( 11 ) to (13), the separation amount includes a monitor for displaying the captured video recorded in the video recording means and a data reproduction means for reproducing the data recorded in the data recording means The measuring device of (Claim 8 ).
Then, the distance measuring devices described in the items (10) to (14) are used in the method for measuring the distances described in the items (3) to (7), respectively. The function corresponding to the measurement method of the separation amount in the item (1) is exhibited.

  Since this invention was comprised in this way, it becomes possible to grasp | ascertain easily the quantitative separation amount of a platform and a railway vehicle, without using a complicated apparatus.

It is a block diagram which shows roughly the structure of the measuring device of the separation amount which concerns on the 1st Embodiment of this invention. It is the schematic which shows the rail vehicle which installed the apparatus of FIG. 1, (a) is the figure shown from the vehicle side surface side, (b) is the figure shown from the vehicle wife surface side. It is a flowchart which shows typically the measuring method of the separation amount using the separation amount measuring apparatus which concerns on the 1st Embodiment of this invention. It is an image figure which shows the relationship between the installation position of a CCD camera and a laser displacement meter. It is an image figure of a monitor screen for explaining pre-calibration. It is an image figure which shows the vehicle from the wife surface side for demonstrating the detection method of the upper surface position of a platform. It is an image figure of the monitor screen for demonstrating the calculation method of separation amount. It is a block diagram which shows roughly the structure of the measuring device of the separation amount which concerns on the 2nd Embodiment of this invention. It is the schematic which shows the measuring method of the conventional separation amount. It is an image figure for explaining the amount of separation when approaching the curved platform side, (a) when the platform is on the curve outer track side, (b) is the case where the platform is on the track inner track side Show.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, parts that are the same as or correspond to those in the prior art are denoted by the same reference numerals, and detailed description thereof is omitted.
FIG. 1 shows a configuration of a separation amount measuring apparatus 10 according to the first embodiment of the present invention, and FIG. 2 shows a railway vehicle 30 provided with the separation amount measuring apparatus 10. As shown in the figure, the distance measuring device 10 includes an imaging unit 12, a video recording unit 16 connected to the imaging unit 12, a detection unit 14, a data recording unit 18 connected to the detection unit 14, and a video recording unit. And processing means 20 connected to the data recording means 18.

  The photographing means 12 is installed downward on the vehicle side surface 32 of the railway vehicle 30. In the example of FIG. 2, the image pickup means 12 has a vehicle longitudinal direction (left-right direction in FIG. 2 (a)) and a vicinity of both ends. It is installed in three places and at the same predetermined height. Further, the photographing means 12 has a photographing range indicated by a reference sign VR in FIG. 2B where the gap between the platform 30 and the vehicle 30 is photographed when the vehicle 30 travels on the side of the platform. An example of the photographing means 12 is a CCD camera.

  The detection means 14 is for detecting the position of the upper surface of the platform. In the example of FIG. 1, a plurality of laser displacement meters 14a1 to 14an, which are non-contact displacement meters, and an amplifier 14b1 connected to each of them. ~ 14bn. In the example of FIG. 2, five laser displacement meters 14a1 to 14a5 are continuously installed in the vehicle height direction in the vicinity of the lower end of the vehicle wife surface 33 on the side surface 32 side where the photographing means 12 is installed. ing. Further, the five laser displacement meters 14a1 to 14a5 are arranged so that the vertical distances H1 to H5 from the photographing means 12 correspond to a plurality of photographing distances with the photographing means 12 as a reference, and the platform side ( It is installed so as to detect the presence or absence of a substance horizontally toward the left side in FIG. The amplifiers 14b1 to 14b5 connected to the laser displacement meters 14a1 to 14a5 amplify signals detected by the laser displacement meters 14a1 to 14a5, and are installed in the railway vehicle 30.

  The video recording means 16 records the video shot by the shooting means 12 in association with the shooting time, and a video recorder or the like is used. The data recording means 18 records the data detected by the detecting means 14 in association with the detection time, and various data recording devices are used. In addition to the detection data from the detection means 14, the data recording means 18 may provide various parameter signals relating to the travel of the railway vehicle 30, such as travel speed, bogie / body vibration acceleration, and body roll angle, as necessary. May be recorded. The video recording unit 16 and the data recording unit 18 are installed in the railway vehicle 30.

  The processing unit 20 uses the calibration data input in advance, the captured video recorded in the video recording unit 16, the detection data recorded in the data recording unit 18, and the like to determine the upper surface position of the platform and perform image processing. Thus, an analysis process for calculating the distance between the platform and the railway vehicle 30 is performed. The processing means 20 may be installed in the railway vehicle 30 and perform analysis processing in the railway vehicle 30, or may be installed in another place on the ground side and the video recording means 16 after recording is completed. The data recording means 18 may be moved to the place where the processing means 20 is installed, and analysis processing may be performed on the ground side. Various computers can be used as the processing means 20.

  In the example of FIG. 2, only the side surface 32 on one side (left side in FIG. 2B) of the both side surfaces 32 of the railway vehicle 30 has three imaging units 12 and five laser displacement meters 14 a 1 to 14 a 5. Are installed on the side surfaces 32 on both sides of the railway vehicle 30 so that the distance can be measured regardless of whether the platform is installed on the left or right side of the traveling direction of the railway vehicle 30. Three imaging means 12 and five laser displacement meters 14a1 to 14a5 may be installed. In this case, two sets of the video recording means 16, the data recording means 18, and the processing means 20 installed in the vehicle 30 may be installed and dedicated to each of the side surfaces 32, or some of them All may be shared by both side surfaces 32. Further, when the three photographing means 12 and the five laser displacement meters 14a1 to 14a5 are installed only on one side surface 32 of the both side surfaces 32 of the railway vehicle 30, three photographings are performed as necessary. The means 12 and the plurality of laser displacement meters 14a1 to 14a5 may be replaced with the opposite side surface 32.

  Next, a distance measurement method implemented using the distance measurement apparatus 10 according to the first embodiment of the present invention described above will be schematically described along the flow of the flowchart shown in FIG. To do. For the configuration of the separation amount measuring apparatus 10, refer to FIGS. 1 and 2 as appropriate.

  S10 (installation position plan): The installation positions of the imaging means 12 and the plurality of laser displacement meters 14a1 to 14an are planned. Specifically, as shown in FIG. 4, the presence or absence of the platform can be detected based on the vehicle specifications of the railway vehicle 30 provided as the test vehicle, the upper surface position of the platform of the railway line for measuring the separation amount, and the like. The installation positions of the plurality of laser displacement meters 14a1 to 14an are set to appropriate heights. Since the plurality of laser displacement meters 14a1 to 14an may be brought into contact with the platform when installed on the vehicle side surface 32, the laser displacement meters 14a1 to 14an are installed at locations where contact with the platform such as the vehicle wife surface 33 can be avoided. Furthermore, the installation position of the photographing means 12 is set to an appropriate height capable of photographing the range including the gap between the platform and the railway vehicle 30 based on the specifications of the CCD camera or the like used as the photographing means 12. The photographing means 12 is installed on the side surface 32 of the vehicle near the center in the vehicle longitudinal direction and near the end. The number of installed laser displacement meters 14a1 to 14an is, for example, the amount of displacement of the upper surface position between the platforms, the detection accuracy of the upper surface position of the platform, etc. provided on the railway line for measuring the distance. Considering the above, set an appropriate quantity.

S20 (preliminary calibration): Perform precalibration to determine the distance conversion ratio of the captured video. That is, as shown in FIG. 4, the imaging means 12 and the plurality of laser displacement meters 14a1 to 14an are installed at the installation position set in S10 above on the railway vehicle 30 provided as a test vehicle, Other components of the measuring apparatus 10 are installed inside the railway vehicle 30. At this time, if the test vehicle cannot be used, install it in a mockup of the same dimensions as the test vehicle. In addition, the following description of this process S20 has demonstrated the case where the measuring device 10 of the separation amount was installed in the rail vehicle 30 as an example.
Next, a calibration rule 40 such as a long one is installed horizontally within the imaging range VR of the imaging means 12 from the vehicle side surface 32 toward the platform at the installation height of the laser displacement meter 14a1. At this time, the photographing distance from the photographing means 12 to the calibration scale 40 and the vertical distance H1 between the photographing means 12 and the laser displacement meter 14a1 are associated with each other and stored in the processing means 20.

In the installation state as described above, when photographing is performed by the photographing means 12 and displayed on the monitor screen or the like, the calibration screen 40 extends horizontally from the image 32a of the vehicle side surface 32 on the monitor screen 22a as shown in FIG. The video 40a is displayed. And in the location shown with the code | symbol A5, the maximum scale of the range which can be read on the monitor screen 22a of the image | video 40a of a calibration scale is read. This read value is the actual distance Lr1 from the vehicle side surface 32 to the photographing range end VRe when the photographing distance is H1. Furthermore, as the length Ld of the photographed video from the video 32a on the vehicle side surface to the photographing range end VRe, for example, the number of dots of the video data constituting the length Ld is grasped using a computer or the like. Then, from the actual distance Lr1 and the length Ld of the photographed video, the conversion ratio Lr1 / Ld of the distance of the photographed video at the photographing distance H1 is set.
Subsequently, the installation height of the calibration scale 40 is changed to the installation height of the laser displacement gauges 14a2 to 14an, and the imaging range end from the vehicle side surface 32 at the imaging distance H2 to Hn in the same manner as described above. The actual distances Lr2 to Lrn to the VRe and the conversion ratios Lr2 / Ld to Lrn / Ld of the distance of the captured video are set. Then, the shooting distances H1 to Hn and the conversion ratios Lr1 / Ld to Lrn / Ld of the distance of the shot video are associated with each other and input to the processing unit 20.

S30 (determination of execution location of pre-calibration): It is determined whether the pre-calibration of S20 is performed by the railway vehicle 30 of the test vehicle or by mock-up. If the pre-calibration is performed by mockup (YES), the process proceeds to S40, and if the pre-calibration is performed by the test vehicle (NO), the process proceeds to S80.
S40 (Each equipment is installed on the test vehicle): Each component equipment of the separation amount measuring device 10 is installed on the railway vehicle 30 of the test vehicle. That is, as shown in FIG. 4, the imaging means 12 and the plurality of laser displacement meters 14a1 to 14an are installed at the installation positions set in S10, and other components such as the video recording means 16 and the data recording means 18 are installed. Are installed inside the vehicle 30.

  S50 (confirmation calibration): In S20 described above, the result of the pre-calibration performed by installing the imaging means 12 and the plurality of laser displacement meters 14a1 to 14an in a mock-up is no different from the case of installing in the railway vehicle 30. To check. That is, as in S20, as shown in FIG. 4, within the imaging range VR of the imaging means 12, the installation height of the laser displacement meter 14a1, the horizontal side from the vehicle side surface 32 toward the platform, etc. The calibration scale 40 is installed. In this state, photographing is performed by the photographing means 12, and as shown in FIG. 5, the photographed image is displayed on the monitor screen 22a, and the maximum scale of the calibration scale image 40a that can be read at the position indicated by the symbol A5 is confirmed. Then, the value of the maximum scale is compared with the actual distance Lr1 from the vehicle side surface 32 to the photographing range end VRe when the photographing distance is set to H1 set in S20. Similarly, the installation height of the calibration scale 40 is changed to the installation height of the laser displacement meters 14a2 to 14an, the maximum scale of the calibration scale image 40a is confirmed, and the confirmed value is set in S20. The actual distances Lr2 to Lrn when the shooting distance is H2 to Hn are compared.

S60 (determining whether or not installation position adjustment is necessary): Based on the comparison result in S50, it is determined whether or not the installation positions of the imaging unit 12 and the plurality of laser displacement meters 14a1 to 14an need to be adjusted. Specifically, if the actual distances Lr1 to Lrn set at the previous calibration in S20 are different from the maximum scale of the calibration scale confirmed in the confirmation calibration in S50, and there is a suspicion such as an installation failure, the installation position Is determined to be necessary (YES), and the process proceeds to S70. On the other hand, if there is no difference between the actual distances Lr1 to Lrn set during the previous calibration in S20 and the maximum scale of the calibration scale confirmed in the confirmation calibration in S50, it is not necessary to adjust the installation position (NO). The determination is made and the process proceeds to S80.
S70 (Installation position adjustment): Based on the installation position set in S10 and the comparison result in S50, the installation positions of the imaging unit 12 and the plurality of laser displacement meters 14a1 to 14an are adjusted. Thereafter, the process returns to S50.

  S80 (data acquisition): On the railway line for measuring the distance, the data necessary for the measurement of the distance is acquired while running the railway vehicle 30 on which the distance measuring device 10 is installed. That is, as shown in FIG. 6, while the photographing unit 12 photographs the photographing range VR including the gap 36 between the platform 34 and the railway vehicle 30, the photographed video is recorded in the vehicle 30 in association with the photographing time. 16 is recorded. In parallel with this, the detection data is recorded in the data recording means 18 in the vehicle 30 in association with the detection time while detecting the presence or absence of the platform 34 by the plurality of laser displacement meters 14a1 to 14a5. At this time, various parameter data relating to travel of the railway vehicle 30 may be recorded in the data recording means 18 as necessary. FIG. 6 shows an example in which five laser displacement meters 14a are installed.

  S90 (photographed video analysis): The video recorded in the video recording means 16 in S80 is analyzed, and the size of the gap 36 between the platform 34 and the railway vehicle 30 in the video is grasped. Specifically, the processing means 20 reads an image when the railway vehicle 30 is running on the side of the platform 34 to be measured from the photographing recording means 16 and analyzes the image. For example, when analyzing an image as shown in FIG. 7, an image of a gap is obtained from an image including an image 34 a of the platform 34, an image 32 a of the vehicle side surface 32, and an image 36 a of the gap 36 between the platform 34 and the vehicle side surface 32. The range corresponding to the image 36a is determined. Then, as the size Bd of the image 36a in the gap, for example, the number of dots of video data constituting the size Bd is grasped. Further, the processing means 20 acquires the shooting time of the analyzed video.

  S100 (displacement meter data analysis): The detection data recorded in the data recording means 18 in S80 is analyzed, the upper surface position of the platform 34 is grasped, and the photographing distance is specified. Specifically, the processing means 20 reads the data detected by the plurality of laser displacement meters 14a1 to 14an recorded at the same time as the video image capturing time analyzed in S90 from the data recording means 18 and performs analysis. For example, when analyzing the detection data recorded in the state shown in FIG. 6, first, three units detecting the platform 34 from the detection data of the five laser displacement meters 14 a 1 to 14 a 5. The laser displacement meters 14a3 to 14a5 are identified.

  Next, the laser displacement meter 14a3 installed at the uppermost portion in the vehicle height direction (vertical direction in FIG. 6) is identified from among the three laser displacement meters 14a3 to 14a5 that are detecting the platform 34. Then, it is determined that the specified installation height of the laser displacement meter 14a3 is substantially equal to the upper surface position of the platform 34, and the installation height of the laser displacement meter 14a3 is set as the upper surface position of the platform 34. Further, the vertical distance H3 from the photographing means 12 to the laser displacement meter 14a3 is set as the photographing distance from the photographing means 12 to the upper surface position of the platform 34 when the image analyzed in S90 is taken. In addition, in order to increase the detection accuracy of the upper surface position of the platform 34, the installation quantity of the plurality of laser displacement meters 14a1 to 14an may be increased and the installation interval may be reduced.

  S110 (calculation of distance): The distance between the platform 34 and the railway vehicle 30 is calculated from the data obtained by the analysis in S90 and S100. Specifically, the processing unit 20 firstly selects the shooting distance H3 specified in S100 from the conversion ratios Lr1 / Ld to Lr5 / Ld of the shooting video distances in the shooting distances H1 to H5 set in S20. The conversion ratio Lr3 / Ld corresponding to is specified. Then, by multiplying the size Bd of the gap image 36a acquired in S90 by the specified conversion ratio Lr3 / Ld, the platform 34 and the railcar 30 that are the actual size of the gap 36 are obtained. Calculate the distance. That is, in the example of FIGS. 5 to 7, when the separation amount is Br, Br = Bd × (Lr3 / Ld).

  Now, according to the first embodiment of the present invention configured as described above, the following operational effects can be obtained. That is, as shown in FIGS. 1 and 2, the separation amount measuring device 10 includes an imaging unit 12, a detection unit 14, a video recording unit 16, a data recording unit 18, and a processing unit 20. The photographing means 12 is installed downward on the side surface 32 of the railway vehicle 30 and, for example, the side end of the platform 34 and the railway vehicle 30 such as a range from the end portion of the platform 34 to a part of the vehicle side surface 32 (see FIG. 7). The measurement range VR including the gap is taken. The video recording means 16 records the video imaged by the imaging means 12. Furthermore, the detection means 14 is for detecting the position of the upper surface of the platform 34. In the example of FIG. 1, the detection means 14 includes a plurality of laser displacement meters 14a1 to 14an and a plurality of amplifiers 14b1 to 14bn. The data recording means 18 is for recording data detected by the detecting means 14. The processing unit 20 performs processing related to the calculation of the separation amount by using the captured video recorded in the video recording unit 16 and the data recorded in the data recording unit 18. The separation amount measuring apparatus 10 can provide an appropriate environment for quantitatively grasping the separation amount, such as processing operations by a computer, by efficiently using these components. Furthermore, since the device configuration is simple, it can be easily installed in the test vehicle.

  Here, in photographing by the photographing means 12 such as a CCD camera, as shown in FIG. 2 (b), the photographing range VR tends to increase as the photographing distance becomes longer. However, if the shooting distance is different, the actual size in the video is also different. Therefore, when the actual distance in the video is grasped from the video, a conversion ratio corresponding to the shooting distance is required for converting the size of the video into the actual size. For this reason, in the measuring method using the distance measuring device 10, the relationship between the vertical photographing distance from the photographing means 12 and the conversion ratio of the distance of the photographed video is preset (S20 in FIG. 3). Then, based on the set relationship, the processing means 20 calibrates the size of the gap between the side edge of the platform 34 and the railway vehicle 30 in the captured image to the actual size, and calculates the separation amount. . As a result, the distance between the platform 34 and the railway vehicle 30 can be quantitatively grasped, and can be easily grasped without using a complicated device.

  In addition, the measuring method using the distance measuring device 10 is that the imaging means 12 captures the measurement range VR including the gap between the side edge of the platform 34 and the railway vehicle 30 while the railway vehicle 30 is running. The photographed video is recorded in the photographing recording means 16 in association with the photographing time. In parallel with this, the upper surface position of the platform 34 is detected, and the upper surface position is recorded in the data recording device 18 in association with the detected time (S80 in FIG. 3). By detecting the upper surface position of the platform 34, the vertical distance from the imaging means 12 to the upper surface position of the platform 34 is determined from this upper surface position and the installation position of the imaging means 12 installed on the side surface 32 of the railway vehicle 30. To do. The video taken from the side surface 32 of the railway vehicle 30 running on the side of the platform 34 captures at least the upper surface position of the end of the platform 34 (see reference numeral 34a in FIG. 7). The vertical distance described above from 12 to the upper surface position of the platform 34 is a substantial photographing distance from the photographing means 12.

  Utilizing this, when the distance is calculated from the recorded photographed image by the processing means 20, the present separation amount is measured based on the upper surface position of the platform 34 recorded at the same time as the photographed image. The shooting distance from 12 is specified. Then, based on the relationship between the preset shooting distance and the conversion ratio of the shot video distance, the distance between the platform 34 and the railway vehicle 30 is calculated from the shot video and the specified shooting distance of the shot video. Accordingly, it is possible to efficiently calculate the separation amount while running the railway vehicle 30 using the upper surface position of the platform 34.

  Further, the distance measuring method using the distance measuring device 10 according to the first embodiment of the present invention includes a plurality of shooting distances as a relationship between the shooting distance and the conversion ratio of the distance of the shot video, and these A distance conversion ratio corresponding to each of a plurality of shooting distances is set in advance. That is, as shown in FIG. 4, a plurality of predetermined distances H1 to Hn are set in advance as shooting distances from the shooting unit 12, and for example, actual shooting is performed using the set predetermined distances as shooting distances. A conversion ratio of distances corresponding to each of the plurality of predetermined distances H1 to Hn is set. When the processing unit 20 calculates the distance from the captured video, the shooting distance at which the video was shot is specified from a plurality of predetermined distances H1 to Hn, and corresponds to the specified predetermined shooting distance. The distance is calculated using the distance conversion ratio. Thus, by setting a plurality of shooting distances H1 to Hn in advance, the distance can be calculated quickly and efficiently.

  Further, this separation amount measurement method uses a plurality of laser displacement meters 14 a 1 to 14 an installed in the railway vehicle 30 as the upper surface position detection means 14 of the platform 34. Specifically, as shown in FIG. 4, when a plurality of laser displacement meters 14 a 1 to 14 an are installed in the railway vehicle 30, the vehicle in which the laser displacement meter 14 a is installed from the imaging means 12 that is also installed in the railway vehicle 30. Vertical distances to a plurality of positions in the height direction are made to correspond to a plurality of predetermined distances H1 to Hn set in advance as shooting distances. The laser displacement meter 14a is installed horizontally from the vehicle 30 side to the platform 34 side so as to detect the presence or absence of an object at the installation height. Accordingly, the plurality of laser displacement meters 14a1 to 14an detect the platform 34 only when the platform 34 is at the same height as its own installation height while the railway vehicle 30 is running on the side of the platform 34. It becomes.

  That is, in the example of FIG. 6, among the laser displacement meters 14a1 to 14a5 installed in the railway vehicle, the laser displacement meters 14a3 to 14a5 having the platform 34 at the same height as the installation height of the railcars detect the platform 34. To do. Further, it is determined that the installation height of the laser displacement meter 14a3 installed at the top of the vehicle height direction among the laser displacement meters 14a3 to 14a5 detecting the platform 34 is substantially equal to the upper surface position of the platform 34. In this method of measuring the distance, the installation height of the uppermost laser displacement meter 14a3 is set as the upper surface position (S100 in FIG. 3). As described above, the position of the upper surface of the platform 34 can be easily detected using an apparatus having a simple configuration.

  In addition, this distance measurement method uses the distance conversion ratio for converting the size of the image to the actual size as the actual size of the shooting range with respect to the size of the shooting range in the shot image. It is determined as a ratio. Specifically, for example, as shown in FIGS. 4 and 5, actual sizes Lr <b> 1 to Lrn of a video imaged at a predetermined imaging distance H <b> 1 to Hn from the vehicle side image 32 a to the imaging range end VRe. Is obtained by reading the scale of the image 40a of the calibration scale, and further, as the image size Ld from the image 32a on the vehicle side surface to the imaging range end VRe, for example, the dots of the image data constituting the size Ld Know the number. Then, using the grasped values Lr1 to Lrn and Ld, the ratio (Lr1) of the actual sizes Lr1 to Lrn in the captured video with respect to the size Ld of the captured video at each of the predetermined shooting distances H1 to Hn. / Ld to Lrn / Ld). If the distance conversion ratio is determined in this way, the actual size of the arbitrary range of the video data is calculated by multiplying the number of dots constituting the arbitrary range of the video data by the distance conversion ratio. be able to. Therefore, in the method for measuring the distance, as shown in FIG. 7, the size Bd such as the number of dots constituting the gap 36a between the video data platform 34a and the vehicle side surface 32a is grasped (FIG. 3). S90), it is possible to efficiently calculate the distance from the size Bd of the gap 36a using a predetermined distance conversion ratio Lr1 / Ld to Lrn / Ld.

  In addition to the detection data from the detection means 14, the data recording means 18 of the separation amount measuring device 10 includes the travel speed, bogie / body vibration acceleration, body roll angle, etc. of the railway vehicle 30 as necessary. If various parameter signals relating to traveling are recorded and these parameters are taken into account in the calculation of the distance, the distance measurement method can further increase the accuracy of the distance.

  Further, as shown in FIG. 2 (a), the measurement method of the separation distance is obtained by installing the photographing means 12 installed on the vehicle side surface 32 in the vicinity of the center and the end in the longitudinal direction of the vehicle. This corresponds to the platform 34 installed in a shape. That is, as shown in FIG. 10A, on the side of the platform 34 installed on the curved outer track side, the gap 36 between the vehicle side surface 32 and the platform 34 is the most in the vicinity of the center in the vehicle longitudinal direction. Wide and gradually narrows from near the center to near the end. On the other hand, as shown in FIG. 10B, on the side of the platform 34 installed on the in-curve track side, the gap 36 between the vehicle side surface 32 and the platform 34 is the most in the vicinity of the center in the vehicle longitudinal direction. It is narrow and gradually widens from the vicinity of the center to the vicinity of the end. Therefore, this separation amount measurement method calculates the separation amount in both the vicinity of the center and the vicinity of the end where the separation amounts are different by installing the photographing means 12 near the center and the vicinity of the end in the longitudinal direction of the vehicle. Therefore, it is possible to grasp the separation amount under more severe conditions from the separation amounts that differ in the longitudinal direction of the vehicle.

  Subsequently, a separation amount measuring apparatus 10 'according to a second embodiment of the present invention will be described with reference to FIG. In FIG. 8, the same reference numerals are given to the same or corresponding parts as those of the separation amount measuring apparatus 10 according to the first embodiment of the present invention. It should be noted that only the difference between the separation amount measuring device 10 'according to the second embodiment of the present invention and the separation amount measuring device 10 according to the first embodiment of the present invention will be described. Description of the configuration and operational effects of the same parts as those of the separation amount measuring apparatus 10 according to the first embodiment of the present invention will be omitted.

As shown in FIG. 8, the separation amount measuring device 10 ′ includes an imaging unit 12, a video recording unit 16 connected to the imaging unit 12, a monitor 22 connected to the video recording unit 16, a detection unit 14, and a detection unit 14. And a data reproducing means 24 connected to the data recording means 18.
The monitor 22 is for displaying the video recorded in the video recording means 16, and various display devices can be used. The data reproducing means 24 is for reproducing and displaying the data recorded in the data recording means 18, and a notebook PC or the like is used. The monitor 22 and the data reproduction means 24 are installed in the railway vehicle 30.

  Next, about the separation amount measuring method implemented using the separation amount measuring apparatus 10 'according to the second embodiment of the present invention described above, schematically along the flow of the flowchart shown in FIG. explain. In addition, please refer FIG.2 and FIG.8 suitably about the structure of the measuring device 10 of a separation amount.

S10 (installation position plan): Since this is the same as the measurement method using the separation amount measuring apparatus 10 according to the first embodiment of the present invention described above, description thereof is omitted.
S20 (preliminary calibration): After setting the shooting distances H1 to Hn and the conversion ratios Lr1 / Ld to Lrn / Ld of the distance of the shot video, they are not input to the processing means 20, and the first of the present invention described above. Since it is the same as that of the measuring method using the measuring device 10 of the separation amount which concerns on this embodiment, description is abbreviate | omitted.
S30 (pre-calibration execution place determination) to S80 (data acquisition): Since this is the same as the measurement method using the separation amount measuring apparatus 10 according to the first embodiment of the present invention described above, description thereof is omitted.

  S90 (photographed video analysis): The video recorded in the video recording means 16 in S80 is analyzed, and the size of the gap 36 between the platform 34 and the railway vehicle 30 in the video is grasped. Specifically, an image when the railway vehicle 30 is running on the side of the measurement target platform 34 is read from the photographing recording means 16 and displayed on the monitor 22. For example, when analyzing an image on the monitor screen 22a as shown in FIG. 7, a long length or the like is assigned on the monitor screen 22a, and the space between the platform 34 and the vehicle side surface 32 on the monitor screen 22a. The size Bd of the image 36a of the gap 36 is measured. Also, the shooting time of the video displayed on the monitor 22 is acquired.

  S100 (displacement meter data analysis): The detection data recorded in the data recording means 18 in S80 is analyzed, the upper surface position of the platform 34 is grasped, and the photographing distance is specified. Specifically, the data detected by the plurality of laser displacement meters 14a1 to 14an recorded at the same time as the image capturing time analyzed in S90 is read from the data recording means 18 and reproduced and displayed by the data reproducing means 24. . For example, when analyzing the detection data recorded in the state shown in FIG. 6, first, three units detecting the platform 34 from the detection data of the five laser displacement meters 14 a 1 to 14 a 5. The laser displacement meters 14a3 to 14a5 are identified.

  Next, the laser displacement meter 14a3 installed at the uppermost portion in the vehicle height direction (vertical direction in FIG. 6) is identified from among the three laser displacement meters 14a3 to 14a5 that are detecting the platform 34. Then, it is determined that the specified installation height of the laser displacement meter 14a3 is substantially equal to the upper surface position of the platform 34, and the installation height of the laser displacement meter 14a3 is determined as the upper surface position of the platform 34. Further, the vertical distance H3 from the photographing means 12 to the laser displacement meter 14a3 is determined as the photographing distance from the photographing means 12 to the upper surface position of the platform 34 when the image analyzed in S90 is taken.

  S110 (calculation of the separation amount): a measurement method using the separation amount measuring apparatus 10 according to the first embodiment of the present invention described above, except that the calculation of the separation amount is performed not by the processing means 20 but by the operator. Since it is the same, description is abbreviate | omitted.

  As described above, the separation amount measuring apparatus 10 'according to the second embodiment of the present invention includes the monitor 22 for displaying the video recorded in the video recording means 16 and the data as shown in FIG. And data reproducing means 24 for reproducing the detected data recorded in the recording means 18. The separation amount measuring device 10 ′ can provide an appropriate environment for quantitatively grasping the separation amount, such as measurement work by an operator, by efficiently using these components. Furthermore, since the device configuration is simple, it can be easily installed in the test vehicle.

  The distance measurement method using the distance measurement device 10 ′ having the above-described configuration is based on the distance conversion ratio for converting the size of the image into the actual size. When determining the ratio of the actual size of the shooting range to the size of the range, the following work is performed. For example, when setting the distance conversion ratio at a predetermined shooting distance, as shown in FIGS. 4 and 5, the shooting unit 12 is installed vertically downward, and the distance from the shooting unit 12 is set to a predetermined shooting range. The calibration rule 40 is arranged horizontally from the vehicle side surface 32 at a position where the distances H1 to Hn become. In this state, the imaging unit 12 captures the imaging range VR including the calibration scale 40 and displays the captured image on the monitor 22. Then, by reading the scale at the photographing range end VRe (near reference A5 in FIG. 5) of the calibration scale 40a displayed on the monitor screen 22a, the actual size from the vehicle side surface 32 to the photographing range end VRe is measured. The lengths Lr1 to Lrn are grasped. Furthermore, the size Ld from the image 32a of the vehicle side surface 32 on the monitor screen 22a to the photographing range end VRe is grasped by measuring the length of the monitor screen 22a by applying a long length or the like.

  Furthermore, using the grasped values Lr1 to Lrn and Ld, the actual size in the photographed image with respect to the size Ld of the photographed image at a predetermined photographing distance H1 to Hn (the long measured value applied on the monitor 22). The ratios (Lr1 / Ld to Lrn / Ld) of the magnitudes Lr1 to Lrn (the scale reading of the calibration scale 40a in the monitor) are determined (S20 in FIG. 3). When the distance conversion ratio is determined in this way, the image displayed on the monitor 22 is obtained by multiplying the size of the image displayed on the monitor 22 on the monitor screen 22a by the distance conversion ratio. The actual size of can be calculated. Therefore, this distance measurement method can efficiently calculate the distance using the predetermined distance conversion ratios Lr1 / Ld to Lrn / Ld.

  Further, as shown in FIG. 7, the method for measuring the distance is to display the captured image on the monitor 22, apply a long length on the monitor screen 22a, and the platform 34a and the vehicle side surface on the monitor screen 22a. The size Bd of the gap 36a with respect to 32a is measured (S90 in FIG. 3). Subsequently, the data detected by the plurality of laser displacement meters 14 a 1 to 14 an recorded at the same time as the captured video displayed on the monitor 22 is read from the data recording means 18 and reproduced by the data reproducing device 24. For example, when the detection data recorded in the state of FIG. 6 is reproduced, it is installed at the uppermost part in the vehicle height direction among the laser displacement meters 14a3 to 14a5 that detect the platform 34 from the reproduced data. The laser displacement meter 14a3 is identified, and the installation height of the uppermost laser displacement meter 14a3 is set as the upper surface position of the platform 34.

  Subsequently, by setting the upper surface position of the platform 34 as the installation height of the laser displacement meter 14a3, the imaging distance of the image displayed on the monitor 22 is specified as the vertical distance H3 from the imaging means 12 to the laser displacement meter 14a3. Of the distance conversion ratios Lr1 / Ld to Lr5 / Ld set to a plurality of preset shooting distances H1 to H5, a distance conversion ratio Lr3 / corresponding to the shooting distance H3 of the video displayed on the monitor 22 Ld is specified. Then, the size Bd of the gap 36a on the measured monitor screen 22a is multiplied by the specified distance conversion ratio Lr3 / Ld, so that the size of the gap 36a on the monitor screen 22a is the actual size. And the distance is calculated (S110 in FIG. 3). Thus, the separation amount can be easily measured by a computer such as the processing means 20 included in the separation amount measuring apparatus 10 according to the first embodiment of the present invention without performing complicated processing such as image processing. can do.

In addition, although the distance measuring device 10, 10 'according to the embodiment of the present invention has been described by way of example as being installed in a test vehicle, a dedicated method for measuring the distance by the measurement method as described above. It is good also as producing this vehicle.
Further, the detection means 14 is not limited to the configuration including the plurality of laser displacement meters 14a1 to 14an, and may be any one that can detect the upper surface position of the platform 34. For example, it may be composed of one measuring instrument having a detection width in the height direction. Furthermore, although the example which used the laser displacement meter was demonstrated as a non-contact-type displacement meter, it is good also as using other non-contact-type displacement meters, such as an ultrasonic displacement meter.

10, 10 ': separation amount measuring device, 12: imaging means, 14: detection means, 14a1 to 14an: plural laser displacement meters, 16: video recording means, 18: data recording means, 20: processing means, 22: Monitor: 24: Data reproduction means, 30: Railway vehicle, 32: Vehicle side, 34: Platform, 36: Clearance, VR: Shooting range, H1 to Hn: Shooting distance (vertical distance), Lr1 to Lrn: Actual shooting range Size, Ld: size of shooting range

Claims (8)

A method for measuring the distance between the side edge of a platform and a railway vehicle,
By photographing means installed downward on the side surface of the railway vehicle, the measurement range including the gap between the side edge of the platform and the railway vehicle is photographed,
Based on the relationship between the preset shooting distance and the conversion ratio of the distance of the shot video, the size of the gap in the shot video is calibrated to calculate the distance ,
While driving the railway vehicle, shooting and recording the measurement range in association with the shooting time, and detecting and recording the upper surface position of the platform,
Based on the relationship between the preset shooting distance and the conversion ratio of the shot video distance, the separation amount is calculated from the shot video and the shooting distance specified from the upper surface position recorded at the same time as the shot video. ,
As a relationship between the shooting distance and the conversion ratio of the distance of the shooting image, a plurality of shooting distances and a conversion ratio of distance corresponding to each of the plurality of shooting distances are set,
A non-contact displacement meter is installed at a plurality of positions in the vehicle height direction of the wife surface of the railway vehicle, wherein the vertical distance from the photographing means corresponds to the plurality of photographing distances,
Among the non-contact type displacement meters that detect the platform while the railway vehicle is running on the side of the platform, the installation height of the non-contact type displacement meter installed at the top in the vehicle height direction is A method for measuring a separation amount , wherein the position is the upper surface position . The conversion ratio of the distance, to the size of the imaging range in the photographing image, the measurement method of claim 1 Symbol placement of the separation quantity, characterized in that defined as the actual size proportions of the shooting range. The distance measuring method according to claim 1 or 2 , wherein the photographing means is installed in the vicinity of the center and the vicinity of the end in the longitudinal direction of the vehicle. Display the captured video on a monitor, measure the size of the gap between the platform side edge and the railcar on the monitor,
Reading the upper surface position recorded in the captured video at the same time displaying, identifies the conversion ratio of the distance corresponding to the photographing distance determined from said surface position,
The method of measuring a separation amount according to any one of claims 1 to 3 , wherein the separation amount is calculated from a size of the gap on the monitor and a conversion ratio of the specified distance. A device for measuring the distance between the side edge of the platform and the railway vehicle,
An imaging means that is installed downward on a side surface of the railway vehicle and photographs a measurement range including a gap between a side edge of the platform and the railway vehicle;
Detecting means for detecting an upper surface position of the platform;
Video recording means for recording video taken by the imaging means;
Data recording means for recording the upper surface position detected by the detection means ;
Based on the relationship between the preset shooting distance and the conversion ratio of the distance of the shot image, the shot image recorded in the image recording means and the upper surface recorded in the data recording means at the same time as the shot image Processing means for calculating the amount of separation from the shooting distance determined from the position,
The processing means sets a plurality of shooting distances and a distance conversion ratio corresponding to each of the plurality of shooting distances as a relationship between a shooting distance and a conversion ratio of a shooting video distance,
The detection means includes a plurality of non-contact displacement meters installed at a plurality of positions in a vehicle height direction on a wife's face of a railway vehicle, wherein vertical distances from the photographing means correspond to the plurality of photographing distances. Including
The processing means includes the non-contact displacement installed at the top in the vehicle height direction of the non-contact displacement meter that detects the platform while the railway vehicle is running on the side of the platform. An apparatus for measuring a separation amount , wherein the installation height of the meter is the upper surface position . 6. The separation amount according to claim 5 , wherein the processing means sets a ratio of the actual size of the shooting range to the size of the shooting range in the shot video as the conversion ratio of the distance. measuring device. The distance measuring device according to claim 5 or 6 , wherein the photographing means is installed in the vicinity of the center and the vicinity of the end in the longitudinal direction of the vehicle. A monitor for displaying the captured images recorded in the image recording means, any one of claims data reproducing means and 7 of claims 5, characterized in that it comprises a for reproducing data recorded in said data recording means A device for measuring the amount of separation.

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